# f=open('b.txt','w',encoding='utf-8')
f=open('b.txt', 'a', encoding='utf-8')
f.write("\n静夜思\n床前明月光\n疑是地上霜")
f.close()
with open('./e.txt','w',encoding='utf-8') as f: f.write("我是个测试文件")